[seqfan] Re: Sequences in a French Book not Found in OEIS

[Olivier Gerard]

Dear Antreas,

Thanks a lot. This book is not so easy to find even in France.
These sequences are concerned with ordered structures,
(topologies, orders, ...)  There are also decompositions of set partitions.


I will put them in the OEIS and give you credit for this find.


Olivier




On Thu, Sep 5, 2013 at 10:46 AM, Antreas Hatzipolakis
<anopolis72 at gmail.com>wrote:

> In the book: Marc Barbut, Bernard Monjardet: Ordre et Classification:
> Algebre
> et Combinatoire. Tome II. Hachette Universite, Paris, 1970, are listed some
> integer sequences.
>
> The following ones are not found in the OEIS:
>
> 1,2,5,16,63,316,.....
>
> 0,0,0,1,20,65,350,...
>
> 0,0,0,0,1,15,140,...
>
> 1,3,8,28,208,....,
>
> 1,1,2,3,7,30,703,...
>
> I do not speak french (neither I am familiar with the subject) so it
> is not easy for me to give good descriptions. So I have made images
> of the pages of the book (containing the sequences) and put
> them in a blog, in the case someone would like to check them.
>
> Please visit the page (and click on the images to enlarge):
>
> http://anthrakitis.blogspot.gr/2013/09/integer-sequences.html
>
> Antreas
>
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